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Table 1 Original simple clinical colitis activity index

From: Using item response theory (IRT) to improve the efficiency of the Simple Clinical Colitis Activity Index (SCCAI) for patients with ulcerative colitis

Item

Scale

Score

Daytime frequency

0–3

0

04-Jun

1

07-Sep

2

 > 9

3

Nocturnal frequency

0

0

01-Mar

1

04-Jun

2

Urgency of defaecation

None

0

Hurry

1

Immediately (toilet nearby)

2

Incontinence

3

Blood in stool

None

0

Trace

1

Occasionally frank (< 50% of stool)

2

Usually frank (> 50% of stool)

3

General well-being

Very well

0

Slightly below par

1

Poor

2

Very poor

3

Terrible

4

Extraintestinal manifestations (score 1 if present, 0 if not)

Arthritis

1

 

Uveitis

1

 

Erythema nodosum

1

 

Pyoderma gangenosum

1

  1. SCCAI ranges from 0 (best) to 19 (worst) [7]